A comparison of cognitive decline in aged mice and mice treated with aftin-4

Žnidaršič, Neža (avtor), Grgurevič, Neža (avtor), Nemec Svete, Alenka (avtor), Meden, Anže (avtor), Snoj, Tomaž (avtor)

Dementia, especially Alzheimer’s disease, presents a major clinical challenge, and researchers are still searching for an optimal animal model. To address this gap, we compared male and ovariectomized female C57BL/6 mice treated with 30 mg/kg aftin-4, which induces neurodegeneration, with naturally aged (15–16 months old) mice not treated with aftin-4. We performed a series of behavioral tests; measured postmortem plasma β-amyloid levels (Aβ1–40 and Aβ1–42) and the levels of the oxidative stress indicators glutathione peroxidase (GPx), superoxide dismutase (SOD) and malondialdehyde (MDA); and evaluated astrocytic reactivity in the brain using glial fibrillary acid protein (GFAP) levels. Our results revealed no behavioral changes in the aged or aftin-4-treated mice compared with the control mice. Aftin-4 mice presented lower brain MDA levels and no detectable changes in plasma Aβ levels. In general, female mice had higher GPx and SOD levels and lower Aβ1–42 levels than male mice did. In contrast, aged and aftin-4-treated male mice presented elevated levels of GFAP, indicating astrocyte damage. Our results could not confirm that either aftin-4-treated or aged mice are reliable models for dementia. However, the observed molecular changes suggest that male animals may be more susceptible to oxidative stress and brain damage than females are. This study demonstrates the complexity of modeling dementia in animals and the importance of future studies in this area.

• Jezik: Angleški jezik
• Ključne besede: aftin-4, aged mice, cognitive decline, oxidative stress, animal behavior
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: VF - Veterinarska fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Datum objave: 01.01.2024
• Leto izida: 2024
• Št. strani: Str. [1-16]
• Številčenje: Vol. 14, [article no.] 28320
• PID: 20.500.12556/RUL-165234
• UDK: 636.09:616
• ISSN pri članku: 2045-2322
• DOI: 10.1038/s41598-024-79792-3
• COBISS.SI-ID: 215571459
• Datum objave v RUL: 27.11.2024

Gradivo je del revije

• Naslov: Scientific reports
• Skrajšan naslov: Sci. rep.
• Založnik: Nature Publishing Group
• ISSN: 2045-2322
• COBISS.SI-ID: 18727432

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P4-0053
• Naslov: Endokrini, imunski in encimski odzivi pri zdravih in bolnih živalih